Home / 311,512.30-429,887.20-168,272.34

Finding the Fourth Proportional to 311,512.30, 429,887.20 and 168,272.34

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Solution

The fourth proportional to 311,512.30, 429,887.20 and 168,272.34 is: 232,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,512.30 : 429,887.20 = 168,272.34 : x
  2. Step 2: Convert to fraction form
    311,512.30/429,887.20 = 168,272.34/x
  3. Step 3: Cross multiply
    311,512.30x = 429,887.20 × 168,272.34
  4. Step 4: Simplify right side
    311,512.30x = 72,338,125,080.05
  5. Step 5: Solve for x
    x = 72,338,125,080.05/311,512.30
  6. Step 6: Final answer
    x = 232,215.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.